appendix c hec-5 model simulation figures€¦ · – annual: atlanta, columbus, george andrews,...
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APPENDIX C
HEC-5 MODEL SIMULATION FIGURES
IOP Consultation Modeling
Concept 5 (IOP) and Concept 6 (RIOP) Comparison
May 2008
Comparisons
Concept 5 -IOP (Current Interim Operations Plan)Concept 6 - RIOP (Revised Interim Operations Plan)• Generation
– Total Annual– Average Monthly Total
• Reservoir Elevations– Range– Maximum, Average, Minimum– Duration
• Flow Duration– Annual: Atlanta, Columbus, George Andrews, Chattahoochee– Monthly: Chattahoochee
Annual Generation
Buford Annual Generation
1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
Ene
rgy
(MW
h)
20,000
40,000
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
220,000
BUFORD DAM CN5_FUL_NOT_U ENERGY-GEN BUFORD DAM CN6_FUL_COE_U ENERGY-GEN
IOP RIOP
West Point Annual Generation
1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
Ene
rgy
(MW
h)
50,000
100,000
150,000
200,000
250,000
WEST POINT CN5_FUL_NOT_U ENERGY-GEN WEST POINT CN6_FUL_COE_U ENERGY-GEN
IOP RIOP
WF George Annual Generation
1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
Ene
rgy
(MW
h)
100,000
200,000
300,000
400,000
500,000
600,000
700,000
W.F. GEORGE CN5_FUL_NOT_U ENERGY-GEN W.F. GEORGE CN6_FUL_COE_U ENERGY-GEN
IOP RIOP
Jim Woodruff Annual Generation
1960 1965 1970 1975 1980 1985 1990 1995 2000 2005
Ene
rgy
(MW
h)
140,000
160,000
180,000
200,000
220,000
240,000
260,000
JIM WOODRUFF CN5_FUL_NOT_U ENERGY-GEN JIM WOODRUFF CN6_FUL_COE_U ENERGY-GEN
IOP RIOP
Monthly Generation
Buford Average Monthly Generation
Mar May Jul Sep Nov3000
Ene
rgy
(MW
h)
6,000
8,000
10,000
12,000
14,000
16,000
18,000
BUFORD DAM CN5_FUL_NOT_U[31JAN1939-29FEB2008] ENERGY-GEN-AVER
BUFORD DAM CN6_FUL_COE_U[31JAN1939-29FEB2008] ENERGY-GEN-AVER
IOP RIOP
West Point Average Monthly Generation
Mar May Jul Sep Nov3000
Ene
rgy
(MW
h)
6,000
8,000
10,000
12,000
14,000
16,000
18,000
20,000
22,000
WEST POINT CN5_FUL_NOT_U[31JAN1939-29FEB2008] ENERGY-GEN-AVER
WEST POINT CN6_FUL_COE_U[31JAN1939-29FEB2008] ENERGY-GEN-AVER
IOP RIOP
WF George Average Monthly Generation
Mar May Jul Sep Nov3000
Ene
rgy
(MW
h)
15,000
20,000
25,000
30,000
35,000
40,000
45,000
50,000
55,000
60,000
65,000
W.F. GEORGE CN5_FUL_NOT_U[31JAN1939-29FEB2008] ENERGY-GEN-AVER
W.F. GEORGE CN6_FUL_COE_U[31JAN1939-29FEB2008] ENERGY-GEN-AVER
IOP RIOP
Jim WoodruffAverage Monthly Generation
Mar May Jul Sep Nov3000
Ene
rgy
(MW
h)
15,000
16,000
17,000
18,000
19,000
20,000
21,000
JIM WOODRUFF CN5_FUL_NOT_U[31JAN1939-29FEB2008] ENERGY-GEN-AVER
JIM WOODRUFF CN6_FUL_COE_U[31JAN1939-29FEB2008] ENERGY-GEN-AVER
IOP RIOP
Pool Elevation Range
Lake LanierRevised IOP
Mar May Jul Sep Nov3000
Ele
v (ft
)
1,050
1,055
1,060
1,065
1,070
1,075
1,080
BUFORD DAM CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MAX
BUFORD DAM CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MIN
BUFORD DAM CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-AVER
BUFORD DAM ZONE1 ELEV
Pool RangeAverageRule Curve
West Point LakeRevised IOP
Mar May Jul Sep Nov3000
Ele
v (ft
)
620
625
630
635
640
WEST POINT CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MAX
WEST POINT CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MIN
WEST POINT CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-AVER
WEST POINT ZONE1 ELEV
Pool RangeAverageRule Curve
WF George LakeRevised IOP
Mar May Jul Sep Nov3000
Ele
v (ft
)
184
185
186
187
188
189
190
191
W.F. GEORGE CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MAX
W.F. GEORGE CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MIN
W.F. GEORGE CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-AVER
W.F. GEORGE ZONE1 ELEV
Pool RangeAverageRule Curve
Buford - Average Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
1,065.0
1,065.5
1,066.0
1,066.5
1,067.0
1,067.5
1,068.0
1,068.5
1,069.0
1,069.5
1,070.0
BUFORD DAM CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-AVER
BUFORD DAM CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-AVER
IOP RIOP
Buford – Maximum Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
1,070
1,071
1,072
1,073
1,074
1,075
1,076
1,077
1,078
BUFORD DAM CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-MAX
BUFORD DAM CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MAX
IOP RIOP
Buford - Minimum Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
1,050
1,052
1,054
1,056
1,058
1,060
1,062
BUFORD DAM CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-MIN
BUFORD DAM CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MIN
IOP RIOP
West Point – Average Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
627
628
629
630
631
632
633
634
WEST POINT CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-AVER
WEST POINT CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-AVER
IOPRIOP
IOP RIOP
West Point – Maximum Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
628
630
632
634
636
638
640
642
WEST POINT CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-MAX
WEST POINT CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MAX
IOP RIOP
West Point - Minimum Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
620
622
624
626
628
630
632
WEST POINT CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-MIN
WEST POINT CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MIN
IOP RIOP
WF George – Average Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
187.8
188.0
188.2
188.4
188.6
188.8
189.0
189.2
189.4
189.6
189.8
W.F. GEORGE CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-AVER
W.F. GEORGE CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-AVER
IOP RIOP
WF George – Maximum Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
188.0
188.5
189.0
189.5
190.0
190.5
191.0
W.F. GEORGE CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-MAX
W.F. GEORGE CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MAX
IOP RIOP
WF George – Minimum Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
184.0
184.5
185.0
185.5
186.0
186.5
187.0
187.5
188.0
188.5
W.F. GEORGE CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-MIN
W.F. GEORGE CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MIN
IOP RIOP
Jim Woodruff – Average Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
77.1
77.2
77.3
77.4
77.5
77.6
77.7
77.8
77.9
JIM WOODRUFF CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-AVER
JIM WOODRUFF CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-AVER
IOP RIOP
Jim Woodruff – Maximum Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
78.0
78.5
79.0
79.5
80.0
JIM WOODRUFF CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-MAX
JIM WOODRUFF CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MAX
IOP RIOP
Jim Woodruff – Minimum Elevation
Mar May Jul Sep Nov3000
Ele
v (ft
)
74.5
75.0
75.5
76.0
76.5
77.0
77.5
78.0
JIM WOODRUFF CN5_FUL_NOT_U[01JAN1939-30MAR2008] ELEV-MIN
JIM WOODRUFF CN6_FUL_COE_U[01JAN1939-30MAR2008] ELEV-MIN
IOP RIOP
Buford Average Elevation 1976-2007
Mar May Jul Sep Nov3000
Ele
v (ft
)
1,063
1,064
1,065
1,066
1,067
1,068
1,069
1,070
1,071
BUFORD OBSERVED[1976-2007] ELEV-AVER BUFORD DAM CN6_FUL_COE_U[1976-2007] ELEV-AVER
IOP RIOP
Pool Elevation Duration
Buford
1045.00
1050.00
1055.00
1060.00
1065.00
1070.00
1075.00
1080.00
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Percent Exceedance
Ele
vatio
n in
Fee
t
Concept 5 Concept 6
Buford Pool DurationIOP RIOP
Buford
1045.00
1050.00
1055.00
1060.00
1065.00
1070.00
50% 55% 60% 65% 70% 75% 80% 85% 90% 95% 100%
Percent Exceedance
Ele
vatio
n in
Fee
t
Concept 5 Concept 6
Buford Pool DurationIOP RIOP
West Point
620.00
625.00
630.00
635.00
640.00
645.00
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Percent Exceedance
Ele
vatio
n in
Fee
t
Concept 5 Concept 6
West Point Pool DurationIOP RIOP
West Point
619.00
621.00
623.00
625.00
627.00
629.00
631.00
633.00
635.00
50% 55% 60% 65% 70% 75% 80% 85% 90% 95% 100%
Percent Exceedance
Ele
vatio
n in
Fee
t
Concept 5 Concept 6
West Point Pool DurationIOP RIOP
WF George
184.00
185.00
186.00
187.00
188.00
189.00
190.00
191.00
192.00
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Percent Exceedance
Ele
vatio
n in
Fee
t
Concept 5 Concept 6
WF George Pool DurationIOP RIOP
Jim Woodruff
74.00
75.00
76.00
77.00
78.00
79.00
80.00
81.00
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Percent Exceedance
Ele
vatio
n in
Fee
t
Concept 5 Concept 6
Jim Woodruff Pool DurationIOP RIOP
Buford Pool Monthly Duration
Buford Pool Monthly Duration - January
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,050
1,055
1,060
1,065
1,070
1,075
1,080
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN Interpolated
IOP RIOP
Buford Pool Monthly Duration - February
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,050
1,055
1,060
1,065
1,070
1,075
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U FEB Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U FEB Interpolated
IOP RIOP
Buford Pool Monthly Duration - March
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,055
1,060
1,065
1,070
1,075
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U MAR Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U MAR Interpolated
IOP RIOP
Buford Pool Monthly Duration - April
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,058
1,060
1,062
1,064
1,066
1,068
1,070
1,072
1,074
1,076
1,078
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U APR Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U APR Interpolated
IOP RIOP
Buford Pool Monthly Duration - May
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,058
1,060
1,062
1,064
1,066
1,068
1,070
1,072
1,074
1,076
1,078
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U MAY Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U MAY Interpolated
IOP RIOP
Buford Pool Monthly Duration - June
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,058
1,060
1,062
1,064
1,066
1,068
1,070
1,072
1,074
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JUN Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JUN Interpolated
IOP RIOP
Buford Pool Monthly Duration - July
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,056
1,058
1,060
1,062
1,064
1,066
1,068
1,070
1,072
1,074
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JUL Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JUL Interpolated
IOP RIOP
Buford Pool Monthly Duration - August
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,055
1,060
1,065
1,070
1,075
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U AUG Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U AUG Interpolated
IOP RIOP
Buford Pool Monthly Duration - September
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,050
1,055
1,060
1,065
1,070
1,075
1,080
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U SEP Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U SEP Interpolated
IOP RIOP
Buford Pool Monthly Duration - October
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,050
1,055
1,060
1,065
1,070
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U OCT Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U OCT Interpolated
IOP RIOP
Buford Pool Monthly Duration - November
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,050
1,055
1,060
1,065
1,070
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U NOV Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U NOV Interpolated
IOP RIOP
Buford Pool Monthly Duration - December
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Ele
v (ft
)
1,045
1,050
1,055
1,060
1,065
1,070
1,075
1,080
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U DEC Interpolated
BUFORD DAM 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U DEC Interpolated
IOP RIOP
Flow Durations
Atlanta Annual Flow Duration
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
ATLANTA 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN-DEC Interpolated
ATLANTA 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN-DEC Interpolated
IOP RIOP
Atlanta Annual Flow Duration
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
500
1,000
1,500
2,000
ATLANTA 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN-DEC Interpolated
ATLANTA 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN-DEC Interpolated
IOP RIOP
Columbus Annual Flow Duration
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000
COLUMBUS GAGE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN-DEC Interpolated
COLUMBUS GAGE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN-DEC Interpolated
IOP RIOP
Columbus Annual Flow Duration
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
1,000
2,000
3,000
4,000
5,000
COLUMBUS GAGE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN-DEC Interpolated
COLUMBUS GAGE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN-DEC Interpolated
IOP RIOP
George Andrews Annual Flow Duration
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
GEORGE ANDREWS 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN-DEC Interpolated
GEORGE ANDREWS 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN-DEC Interpolated
IOP RIOP
George Andrews Annual Flow Duration
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
8,000
GEORGE ANDREWS 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN-DEC Interpolated
GEORGE ANDREWS 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN-DEC Interpolated
IOP RIOP
Chattahoochee Annual Flow Duration
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
20,000
40,000
60,000
80,000
100,000
120,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN-DEC Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN-DEC Interpolated
IOP RIOP
Chattahoochee Annual Flow Duration
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
18,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN-DEC Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN-DEC Interpolated
IOP RIOP
Chattahoochee Monthly Flow Duration
• The following slides compare the monthly flow duration for the current IOP and the Revised IOP
• The major difference occurs during the extreme low flow events (15 Percentile).
• Under the Revised IOP, flows are reduced during the spawning months March-May as the composite storage transitions from zone 2 to zone 3
• The minimum flow requirement is not the driver of the system, because the 90th percentile flow is greater than the required flow.
• During the dry months Sep – Nov the Revised IOP is less than the IOP because of the drought plan. (for example the 90th percentile is 6500 under the IOP but 5000 under the Revised IOP.
Monthly Flow Duration - March
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
50,000
100,000
150,000
200,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U MAR Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U MAR Interpolated
IOP RIOP
Monthly Flow Duration - March
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U MAR Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U MAR Interpolated
IOP RIOP
Monthly Flow Duration - April
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
20,000
40,000
60,000
80,000
100,000
120,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U APR Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U APR Interpolated
IOP RIOP
Monthly Flow Duration - April
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
5,000
10,000
15,000
20,000
25,000
30,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U APR Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U APR Interpolated
IOP RIOP
Monthly Flow Duration - May
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U MAY Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U MAY Interpolated
IOP RIOP
Monthly Flow Duration - May
Percent EXCEEDANCE
20 30 40 50 60 70 80 90 100
Flow
(cfs
)
5,000
10,000
15,000
20,000
25,000
30,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U MAY Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U MAY Interpolated
IOP RIOP
Monthly Flow Duration - June
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JUN Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JUN Interpolated
IOP RIOP
Monthly Flow Duration - June
Percent EXCEEDANCE
40 50 60 70 80 90 100
Flow
(cfs
)
2,000
4,000
6,000
8,000
10,000
12,000
14,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JUN Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JUN Interpolated
IOP RIOP
Monthly Flow Duration - July
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
50,000
100,000
150,000
200,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JUL Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JUL Interpolated
IOP RIOP
Monthly Flow Duration - July
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
2,000
4,000
6,000
8,000
10,000
12,000
14,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JUL Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JUL Interpolated
IOP RIOP
Monthly Flow Duration - August
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U AUG Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U AUG Interpolated
IOP RIOP
Monthly Flow Duration - August
Percent EXCEEDANCE
40 50 60 70 80 90 100
Flow
(cfs
)
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U AUG Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U AUG Interpolated
IOP RIOP
Monthly Flow Duration - September
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U SEP Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U SEP Interpolated
IOP RIOP
Monthly Flow Duration - September
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
2,000
4,000
6,000
8,000
10,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U SEP Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U SEP Interpolated
IOP RIOP
Monthly Flow Duration - October
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U OCT Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U OCT Interpolated
IOP RIOP
Monthly Flow Duration - October
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
2,000
4,000
6,000
8,000
10,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U OCT Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U OCT Interpolated
IOP RIOP
Monthly Flow Duration - November
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U NOV Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U NOV Interpolated
IOP RIOP
Monthly Flow Duration - November
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
2,000
4,000
6,000
8,000
10,000
12,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U NOV Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U NOV Interpolated
IOP RIOP
Monthly Flow Duration - December
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
20,000
40,000
60,000
80,000
100,000
120,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U DEC Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U DEC Interpolated
IOP RIOP
Monthly Flow Duration - December
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U DEC Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U DEC Interpolated
IOP RIOP
Monthly Flow Duration - January
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
20,000
40,000
60,000
80,000
100,000
120,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN Interpolated
IOP RIOP
Monthly Flow Duration - January
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
5,000
10,000
15,000
20,000
25,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U JAN Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U JAN Interpolated
IOP RIOP
Monthly Flow Duration - February
Percent EXCEEDANCE
0 10 20 30 40 50 60 70 80 90 100
Flow
(cfs
)
0
20,000
40,000
60,000
80,000
100,000
120,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U FEB Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U FEB Interpolated
IOP RIOP
Monthly Flow Duration - February
Percent EXCEEDANCE
50 60 70 80 90 100
Flow
(cfs
)
0
5,000
10,000
15,000
20,000
25,000
30,000
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN5_FUL_NOT_U FEB Interpolated
CHATTAHOOCHEE 1DAY: 01JAN1939-31DEC2008 CN6_FUL_COE_U FEB Interpolated
IOP RIOP
Chattahoochee Flow Concept 6
1000
10000
100000
1000000
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Percent Exceedance
Flow
in C
FS
Regulalted Required
RIOP Chattahoochee FlowRequired vs Regulated